Electric noise absorber

Abstract

An electric noise absorber comprises an axially divided magnetic body having abutment surfaces, a first joint on which the divided magnetic body can swing, and a second joint having a resilient member. The end of a second joint is attached to one part of the divided magnetic body, and the other end of the second joint can be attached to or detached from the other part of the divided magnetic body. Since the second joint can be unlocked, the electric noise absorber can be easily attached around a desired position on the electric wire without disconnecting the electric wire. When the other end of the second joint is pulled and attached to the magnetic body using the contraction force of the resilient member, the abutment surfaces of the divided magnetic body are held closely adjacent to the electric wire, making a magnetic circuit about the electric wire. The electric noise absorber can thus absorb electric noise with a minimum required structure.

What is claimed is: 
     
       1. An electric noise absorber for absorbing noise on an electric cord, comprising: two bodies of magnetic substance having inner and outer surfaces, where the bodies contact each other at first and second contact points such that they surround the cord;   a plastic film covering said outer surfaces of said two bodies;   a hinge attached to the first and second bodies, rotatably connecting the bodies at the first contact point; and   locking means attached to the first and second bodies for selectively interlocking the two bodies at the second contact point, wherein said locking means comprises a locking tab attached to a resilient member that extends from said first body at said second contact point and an engaging band attached to said second body at said contact point, where said resilient member resiliently extends and said locking tab selectively engages the engaging band, thereby securely holding the two bodies together.   
     
     
       2. The electric noise absorber of claim 1, wherein the locking tab is barbed. 
     
     
       3. The electric noise absorber of claim 1, wherein the locking tab and the engaging band are VELCRO. 
     
     
       4. The electric noise absorber of claim 1, wherein the locking tab is adhesive tape. 
     
     
       5. The electric noise absorber of claim 1, wherein contact means are attached to the inner surface of the bodies for eliminating space between the bodies and the cord. 
     
     
       6. The electric noise absorber of claim 5, wherein the contact means are foam urethane plates. 
     
     
       7. An electric noise absorber for absorbing noise on an electric cord, comprising: a plurality of bodies of magnetic substance that contact each other such that they surround the cord;   a holding means attached to each of said bodies for holding the bodies around the cord, wherein said holding means comprises a single band having a resilient member and adhesive tape at one end, where said single band wraps around said bodies and said tape adheres to the other end of said band, thereby holding the bodies together around the cord.   
     
     
       8. The electric noise absorber of claim 7, wherein the holding means is attached to a film plastic on the surface of the bodies. 
     
     
       9. The electric noise absorber of claim 7, wherein securing means for securing the noise absorber to a surface are attached to the holding means. 
     
     
       10. An electric noise absorber for absorbing noise on an electric cord, comprising: two bodies of magnetic substance having inner and outer surfaces, where the bodies contact each other at first and second contact points such that they surround the cord, wherein the inner surfaces have a hemispherical groove for receiving the electric cord;   a plastic film covers the outer surfaces of both bodies of magnetic substances;   a hinge attached to said first and second bodies, rotatably connecting the bodies at the first contact point;   an interlock means for interlocking the first and second bodies at the second contact point, comprising an elastic band connected to the plastic film on the first magnetic body at one end and connected to an attaching means at another end and a receiving means for receiving the attaching means attached to the plastic film on the second magnetic body; and   positioning means for holding the cord in place attached to the hemi-spherical grooves.   
     
     
       11. An electric noise absorber for absorbing noise in an electrical cord, comprising: three bodies of magnetic substances having inner surfaces contacting each other at three contact points such that they surround the cord;   a holding means attached to each of said three bodies for holding the bodies around the cord that encircles the bodies;   interlock means attached to the holding means for selectively interlocking the holding means around the cord; and   contact planes are formed on each body at the three contact points, where the contact plane of each body at each contact point is parallel to the contact plane of the adjacent body and the contact planes are perpendicular to the inner surfaces of the magnetic surfaces.   
     
     
       12. An electric absorber for absorbing noise in an electric cord, comprising: first and second bodies of magnetic substances, each having contacting inner surfaces, with a groove formed in at least one of the inner surfaces for receiving the cord, and first and second sides;   a hinge attached to the first sides of each body rotatably attaching the two bodies;   a locking tab attached to the first body at its second side; and   a receiving pad attached to the second body at its second side;   wherein the locking tab securely attaches to the receiving pad, thereby selectively interlocking the two bodies together around the cord; and   wherein the bodies have an outer surface covered with plastic film, and the hinge, locking tab, and receiving pad are attached to the film on the outer surfaces of the bodies.   
     
     
       13. An electric noise absorber for absorbing noise in an electric cord, comprising: first and second bodies of magnetic substance, each having contacting inner surfaces, with a groove formed in at least one of the inner surfaces for receiving the cord, and first and second sides;   a hinge attached to the first sides of each body rotatably attaching the two bodies;   a locking tab attached to the first body at its second side; and   a receiving pad attached to the second body at its second side;   wherein the locking tab securely attaches to the receiving pad, thereby selectively interlocking the two bodies together around the cord; and   wherein grooves are formed on the inner surfaces of both bodies, and positioning means are attached to the grooves in the inner surfaces of the bodies for holding the cord in position.   
     
     
       14. An electrical noise absorber for absorbing noise on an electric cord, comprising: two bodies of magnetic substance that contact each other at two contact points such that they surround the cord;   a hemispherical groove is formed in an inner surface of each body to receive the cord;   contact planes are formed on each body at the two contact points, where the contact planes on the bodies at the contact points are parallel to each other, and the contact planes at each contact point are parallel to a line tangent to the surface of the hemispherical groove at the contact point;   a holding means comprising a continuous band permanently adhered to each of said bodies for holding the bodies around the cord that encircles the bodies; and   interlock means attached to the holding means for selectively interlocking the holding means around the cord.   
     
     
       15. An electric noise absorber for absorbing noise on an electric cord, comprising: two bodies of magnetic substance, where said bodies contact each other at first and second points such that they surround the cord;   a first joint adhered to the ends of said bodies at said first contact point;   a second joint adhered to the ends of said bodies at said second point, wherein adhesive tape is attached to said second joint.   
     
     
       16. An electric noise absorber for absorbing noise on an electric cord, comprising first and second bodies of magnetic substance, each having inner surfaces, with a groove formed in at least one of the inner surfaces for receiving the cord, and first and second sides;   a hinge attached to the first sides of each body rotatably attaching the two bodies;   a locking tab attached to the first body at its second side; and   a receiving pad attached to the second body at its second side; and   a securing means for securing the noise absorber to a surface, said securing means being attached to one of said bodies;   wherein the locking tab securely attaches to the receiving pad, thereby selectively interlocking the two bodies together around the cord.